BSRIA Instrument Solutions
Old Bracknell Lane West, Bracknell, Berkshire, RG12 7AH, UK
Tel: +44 (0) 1344 459314 Fax: +44 (0) 1344 465556
Sales : sales@bis.fm Hire : hire@bis.fm Calibration : calibration@bis.fm

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Testo : 312

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Compact DVGW approved pressure gauges for gas systems.

The Testo 312 pressure gauges are practical electronic alternatives to manual instruments for testing gas tightness.

Testo 312-1

The Testo 312-1 is not available for purchase, ISO or UKAS calibration is only available for his model

Testo 312-2

The Testo 312-2 accurately measures pressures from 0 to 200 hPa. The instrument actually has an accuracy of ±0.03hPa in the adjustable measuring range 0 to 40hPa.

Testo 312-3

The testo 312-3 has an extended measuring range of up to 6000 hPa for the stability test on gas lines.Service on heating systems. This too has no electrode current or temperature measurement capabilities.

ADVANTAGES

• Clear display with time
• Switchable precision measuring ranges with high resolution.
• Freely adjustable alarm limits.
• Printout feature.

APPLICATIONS

• Pressure drop test on gas pipes, including fittings.
• Differential Pressure measurements on heating instruments.
• Checks flue draught limit value.
• Monitors combustion chamber flame, ionisation current measurement

TECHNICAL SPECIFICATIONS

Testo 312-1 & Testo 312-2

PRESSURE MEASUREMENT
Measuring Ranges
±40hPa & ±200hPa
Resolution
±40hPa = 0.01hPa
±200hPa = 0.1hPa
Accuracy
0.03hPa (<3.00hPa)
±(1.5% of M.V + 1 digit) (>3.00hPa)
±(0.5hPa + 1 digit) (<50hPa)
±(2hPa + 1 digit) (>50hPa)

Substances which can be measured are all non-corrosive gases.
Alarm Display
Audible and visual alarm when limit values exceeded.
Max Overload
1 bar

Testo 312-1 Only

CURRENT MEASUREMENT
Measuring Ranges
±100 uA
Resolution
1 uA
Accuracy
±(3 uA+ 1 digit)

TEMPERATURE MEASUREMENT
Measuring Ranges
-40 to 600°C
Resolution
0.1°C
Accuracy
±(0.5°C + 1 digit)( <99.9°C)
±(0.5% MV + 1 digit)(>100°C)

Testo 312-1 & Testo 312-2

PRESSURE MEASUREMENT
Measuring Ranges
±300hPa & ±6000hPa
Resolution
±300hPa = 0.1hPa
±6000hPa = 1hPa
Accuracy
±(4hPa + 1 digit) (<400hPa)
±(2% of M.V + 1 digit) (400 to 2000hPa)
±(4% of M.V + 1 digit) (>2000hPa)
Max Overload
3 bar

BSRIA Instrument Solutions reserve the right to change Instrument specifications without notification. Hire Instrument Specifications may differ from those claimed by the manufacturer.

Models, availability and pricing

312-1

	Availability	Price
Hire		Call
Sale		Call
Calibration		Call

312-2

	Availability	Price
Hire		Call
Sale		Call
Calibration		Call

312-3

	Availability	Price
Hire		Call
Sale		Call
Calibration		Call

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